Samsung, perhaps, mistakenly set the cell standby value to 34mA in the power_profile.xml. A simple fix to this is simply to reset the value to 3.4mA—which, XDA devs claim is a more “reasonable” value.

A mod has been created by XDA devs to fix this problem, but it is important to note that the mod is intended to fix the wrong report, and not fix battery drainage from other user installed apps and/or profiles.

“This mod will fix the wrong reporting of “cell stand by “usage to some extent. If your mobile has actual drain due to signal issues or some other issues do not blame me or any other for not fixing this.”